C / C++ / MFC Discussion Boards

Re: Render multiple object in single view

beko30-Apr-09 4:31

30-Apr-09 4:31

Hello,

you can define a draw function for each object in its class, and make that class inherited from an interface.

class Object
{
.....
virtual void draw() = 0;
....
};

class Circle : public Object
{
virtual void draw() {}
};

and call each objects'draw method in the view.

you may also want to look at the visitor pattern.

Hope this helps.

Bekir.

Re: Render multiple object in single view

David Crow30-Apr-09 5:02

David Crow

30-Apr-09 5:02

PRC wrote:
...and the other is the view of the selected object.

Which (I think) would require a separate CView-type class for each. In the pane that controls the list of available objects (e.g., OnItemChanged() method if using CListView), figure out which object is selected and tell the splitter window to change to the corresponding view.

I did this once with a gymnastics-related application. I only had 3 items in the left pane, however.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

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Re: Render multiple object in single view

PRC30-Apr-09 20:07

PRC

30-Apr-09 20:07

Thanks to all for the response.

Led Mike - think you may have me sorted on this one.

The objects primary intent is not to render so you are correct that Separation of concerns would suggest my idea was a bad idea.

Thanks to all for the response.

Paul C

[Message Deleted]

SoumyaSri30-Apr-09 0:57

SoumyaSri

30-Apr-09 0:57

[Message Deleted]

Re: how installer create a copy of msi with new file name in temp location?

Rajesh R Subramanian30-Apr-09 1:01

Rajesh R Subramanian

30-Apr-09 1:01

Hi, this is the C++ forum and you're asking an MSI packaging question. Does this ring a bell? Smile | :)

It is a crappy thing, but it's life -^ Carlo Pallini

Re: how installer create a copy of msi with new file name in temp location?

Rolando CC30-Apr-09 8:36

Rolando CC

30-Apr-09 8:36

Maybe it is based on a GUI object...

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Deleting ini key-value using API

CodingLover29-Apr-09 23:47

CodingLover

29-Apr-09 23:47

Hi All,

On an INI file I want to delete a key-value. Using WritePrivateProfileString I can add a new entry. How can I delete a one

Thanks a lot Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: Deleting ini key-value using API

Michael Schubert29-Apr-09 23:58

Michael Schubert

29-Apr-09 23:58

Looking at the documentation might help: http://msdn.microsoft.com/en-us/library/ms725501.aspx[^]

Re: Deleting ini key-value using API

_AnsHUMAN_ 29-Apr-09 23:59

_AnsHUMAN_

29-Apr-09 23:59

CodingLover wrote:
Using WritePrivateProfileString I can add a new entry. How can I delete a one

using the same thing. See the parameter values
lpKeyName
[in] Pointer to a null-terminated string containing the key to be associated with the string. If the key does not exist in the specified section, it is created. If this parameter is NULL, the entire section, including all entries in the section, is deleted.
lpString
[in] Pointer to a null-terminated string to be written to the file. If this parameter is NULL, the key pointed to by the lpKeyName parameter is deleted.

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: Deleting ini key-value using API

CPallini30-Apr-09 0:02

CPallini

30-Apr-09 0:02

~~As you probably know, there isn't a function like, for instance, DeletePrivateProfileKey. Hence, I see two possible approaches:~~

~~(the quick one) Use the WritePrivateProfileString function to invalidate the key, assigning it a well-know string (for instance empty string).~~
~~(the cumbersome one) Read the whole ini file and create a new one with only the sections and keys you want to retain.~~

Well, looks like I was wrong... Roll eyes | :rolleyes:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Deleting ini key-value using API

CodingLover30-Apr-09 0:05

CodingLover

30-Apr-09 0:05

Even I want to read the file and remove the unwanted key make mess for me. That's why I look at an API

I appreciate your help all the time...
CodingLover Smile | :)

Re: Deleting ini key-value using API

CodingLover30-Apr-09 0:18

CodingLover

30-Apr-09 0:18

Ok, i figured it out.

But now I have another messup. All my keys are in a combo box. I want to get the selected text, or the key. Please help me to do this.

ComboBox_GetText doesn't make sense sir.

Please help me.

I appreciate your help all the time...
CodingLover Smile | :)

Re: Deleting ini key-value using API

_AnsHUMAN_ 30-Apr-09 0:33

_AnsHUMAN_

30-Apr-09 0:33

By using CComboBox::GetCurSel you can get the index of the selected item and then use CComboBox::GetLBText()

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: Deleting ini key-value using API

CodingLover30-Apr-09 0:49

CodingLover

30-Apr-09 0:49

Actually I use standard C controls. I only know the ID of it. Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: Deleting ini key-value using API

Rajesh R Subramanian30-Apr-09 0:58

Rajesh R Subramanian

30-Apr-09 0:58

See the messages that you can use with a combo box control then. For instance, CB_GETCURSEL[^] instead of CComboBox::GetCursel().

It is a crappy thing, but it's life -^ Carlo Pallini

Detect text (word) under mouse pointer

Héctor Pavón29-Apr-09 22:50

Héctor Pavón

29-Apr-09 22:50

Hi forum!

I'm wondering how could I read the word behind the mouse pointer. Let's say my app. has a CRichEditView and when user stops moving the mouse I want to grab the word that is under the pointer, so I can show a tooltip with certain info. Yes in a fashion like Visual Studio displays a variable value when you mouse over it in debugging mode.

After googling for a couple of days I've just found some approaches like using IAccessible class from MS Active Accesibility:

http://blogs.msdn.com/oldnewthing/archive/2004/04/23/118893.aspx

But it just gives the whole content of the view. And I guess it's not trivial to get the mouse coordinates and translate it into a document position.

Any clues, code samples, references or even claps in the shoulder will be much appreciated.

Thanks in advance

Re: Detect text (word) under mouse pointer

Stephen Hewitt30-Apr-09 0:02

Stephen Hewitt

30-Apr-09 0:02

One way would be so use the EM_CHARFROMPOS[^] (or the CRichEditCtrl::CharFromPos[^] function if you're using MFC's CRichEditCtrl[^]). Using IAccessible is overkill in your case.

Steve

Re: Detect text (word) under mouse pointer

Héctor Pavón30-Apr-09 5:27

Héctor Pavón

30-Apr-09 5:27

Thanks Stephen! It's just the idea I'm working on now, and it seems to be taking me somewhere... after two days wandering around silly approaches.

Just a couple tips for possible readers:

If like me you're playing with OnMouseMove and a CEdit control, remember that

a) It's the control itself not the containing window wich may handle the WM_MOUSEMOVE message (a couple hours lost for a newbie like me). One way to achieve it is to derive your class from CEdit, place the message handler there and bind your ICD_MY_EDIT_THING with a control variable of this class (DDX stuff).

b) Of course it's the control who has to SendMessage(EM_CHARFORMPOS, ...), so do it in the above mentioned message handler.

c) Watch out the difference of SendMessage LPARAM parameter deppending on you're working with a CEdit or a CRichEditCtrl.

Hope this saves others time and frustration

updating from vc2002 to vc2005

002comp29-Apr-09 22:30

002comp

29-Apr-09 22:30

hello friends
What points should b consider when i update my project from vs2002 to vs2005.B;coz i m facing too many linker errors like

error LNK2001: unresolved external symbol __imp___CrtDbgReportW
error LNK2001: unresolved external symbol __imp___CrtDbgReportW
error LNK2019: unresolved external symbol "private: class ReferenceMaker & __thiscall ReferenceMaker::operator=(class ReferenceMaker const &)" (??4ReferenceMaker@@AAEAAV0@ABV0@@Z) referenced in function "public: class ReferenceTarget & __thiscall ReferenceTarget::operator=(class ReferenceTarget const &)" (??4ReferenceTarget@@QAEAAV0@ABV0@@Z)

Re: updating from vc2002 to vc2005

_AnsHUMAN_ 29-Apr-09 22:35

_AnsHUMAN_

29-Apr-09 22:35

You may need to locate the appropriate CRT library and include it in your linker settings under Project->(Project Name) Properties.... and also the other libraries if any.

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: updating from vc2002 to vc2005

002comp29-Apr-09 22:53

002comp

29-Apr-09 22:53

I added the same library that was in vc 2002. Do i need to add any other except that?

Re: updating from vc2002 to vc2005

David Crow30-Apr-09 3:51

David Crow

30-Apr-09 3:51

yogeshs wrote:
error LNK2001: unresolved external symbol __imp___CrtDbgReportW
error LNK2001: unresolved external symbol __imp___CrtDbgReportW

Are you linking with libcd.lib or msvcrtd.lib?

::ShellExecute - Problem passing arguments

PankajB29-Apr-09 22:10

PankajB

29-Apr-09 22:10

Hi there.

I have an Console based Exe (ABC.exe) that takes some parameters.
Now, I want to call this Exe from some other application and want to pass the paremeters as required.

Problems:
1. I am calling this exe as below

HINSTANCE hInst = ::ShellExecute(NULL, L"open", L"C:\\Documents and Settings\\pankaj.bhalla\\Desktop\\ABC.exe", L"Hello", NULL, SW_SHOW);

ABC.exe application got launched but text "Hello" never got displayed on the console.

2. In place of this hardcoded text i.e., "Hello", incase I want to send some text stored in CString type variable then how can I do that.

Help will be really appretiated.

Thanks
PanB

Re: ::ShellExecute - Problem passing arguments

Rajesh R Subramanian29-Apr-09 22:23

Rajesh R Subramanian

29-Apr-09 22:23

PankajB wrote:
ABC.exe application got launched but text "Hello" never got displayed on the console.

What is the target application doing with the parameters passed on to it? Is there any code for displaying it or not? Roll eyes | :rolleyes:

PankajB wrote:
2. In place of this hardcoded text i.e., "Hello", incase I want to send some text stored in CString type variable then how can I do that.

You can pass the CString variable as the fourth parameter as it is, because ShellExecute is expecting an LPCTSTR there and CString will be automatically casted there.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: ::ShellExecute - Problem passing arguments

PankajB29-Apr-09 22:27

PankajB

29-Apr-09 22:27

I am basically passing a path to a file.
Target application just check whether file exists, if does not then create that file.

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